Noun: marijuana, reefer, herb, pot, weed, ganja, or any plant with THC content. Not usually associated with hashish (see chunkage or sheesh)
Verb: to light up, to smoke, or to get stoked.
"Bob & Greg brought some awesome blorch upstate, you should try some - it's delicious"
"Do you think that we can smoke any blorch inside the concert hall?"
"You better not blorch up in here, there are narcs all over the place dude"